• Title/Summary/Keyword: 정화시설

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Evaluation of Purification Efficiency of Passive Treatment Systems for Acid Mine Drainage and Characterization of Precipitates in Ilwal Coal Mine (일월탄광에서 유출되는 산성광산배수 자연정화시설의 정화 효율 평가 및 침전물의 특성연구)

  • Ryu, Chung Seok;Kim, Yeong Hun;Kim, Jeong Jin
    • Journal of the Mineralogical Society of Korea
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    • v.27 no.2
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    • pp.97-105
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    • 2014
  • Artificial precipitation ponds, consisting of three steps of oxidation pond, successive alkalinity producing system (SAPS) and swamp, were constructed for the treatment of the acid mine drainage from the Iwal coal mine. The efficacies of the passive treatment system in terms of neutralization of mine water and removal of dissolved ions were evaluated by the chemical analyses of the water samples. Mine water in the mine adits was acidic, showing the pH value of 2.28-2.42 but the value increased rapidly to 6.17-6.53 in the Oxidation pond. The purification efficiencies for the removal of Al and Fe were 100%, whereas those of $SO_4$, Mg, Ca, and Mn were relatively low of 50%, 40%, 24%, and 59%, respectively. These results indicate a need for application of additional remediation techniques in the passive treatment systems. The precipitates that formed at the bottom of the mine water channels were mainly schwertmannite ($Fe_8O_8(OH)_6SO_4$) and those in the leachate water were 2-line ferrihydrite ($Fe_2O_3{cdot}0.5H_2O$).

Assessment of the fonction of Retention Pond, A-71 Motorway, France (프랑스 A-71고속도로변 Retention Pond의 기능평가)

  • 이평구;이재영
    • Journal of Korea Soil Environment Society
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    • v.2 no.1
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    • pp.73-81
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    • 1997
  • Retention ponds have been dug along some of the motorways to control water flow during rainstorms and to minmize environmental pollution. A retention pond located at Les Ardilleres about 20km South of Orleans along the A-71 motorway has been selected to evaluate the effectiveness of such a pond as a trap for heavy metals. Based on the "index of geoaccumulation" and the "enrichment factor" normalized to Fe introduced by Muller in 1979 and by Helz in 1976, respectively, the degree of contamination by heavy metals for the roadside soil and the settling particles was evaluated. As expected, the contamination was very severe in the roadside soil, while it was not so great in the settling particles. Using these methods, cadmium anomaly was traced in the settling particles of the retention pond, their occurrence being attributed partly to natural and partly to anthropogenic pollution. The estimated input of heavy metals associated with settling particles to the pond was 0.9 g/day Pb, 2.1 g/day Zn and 6mg/day Cd. A tentative mass balance of Pb and Zn originated by motor vehicles suggested that only 5 to l1% of heavy metals deposited on the surface of the motorway is carried to the retention pond by runoff water ; suggestions are made to improve their efficiency.ve their efficiency.

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계분과 관련된 법률들

  • 남두희
    • KOREAN POULTRY JOURNAL
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    • v.19 no.9 s.215
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    • pp.34-38
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    • 1987
  • 축산 폐수 정화시설 의무설치 및 관리에 대한 법 적용이 88년 6월1일부터 시행됨에 따라 양계장 계분처리시설의 문제점이 야기되고 있는 바 본고에서는 관련된 법률을 정리, 양축가에게 도움을 주고자 한다.

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'90년도 정부의 양돈정책을 알아본다-축산분뇨 처리정책

  • Sin, Hyeon-Guk
    • The Korea Swine Journal
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    • v.12 no.1 s.125
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    • pp.106-108
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    • 1990
  • 정부는 90년도에는 양축농가의 정화시설 설치를 돕기 위해 농림수산부에서는 농촌지원금을, 환경청에서는 환경오염 방지 기금과 국민투자기금을 활용하여 자금을 지원하고 영세농가를 위해선 공동처리 시설을 설치할 계획이다.

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An Overview of Coal Mine Drainage Treatment (석탄광의 광산배수처리기술 현황 및 전망)

  • 정영욱
    • Economic and Environmental Geology
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    • v.37 no.1
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    • pp.107-111
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    • 2004
  • This study was undertaken to summarize of the efficiencies of the passive treatment system and suggest future studies for the solution of mine drainage problem. Flow rates of mine drainage from the abandoned coal mines are about 80,000 ton/day. Contaminated mine drainages over about 50 ton/day of flow rate were treated by passive treatment facilities such as Successive Alkalinity Producing Systems(SAPS), oxidation pond and oxic wetland. Chemical analysis for 13 passive coal mine treatment facilities showed that SAPS was the core of treatment facilities because the variation of Fe removal rates was relatively smaller than any other processes and re-leaching of Fe was not measured. The performance and life of SAPS depended on decrease in permeability and retention time due to accumulation of sludge. It is inferred that upgrade of design of the passive treatment system and in-situ treatment using underground void will be necessary for the amelioration of the mine drainage with high metal loading rates.